to be able to upload images, you will need to set up your own image uploader/browser.

first off all, go to https://bitbucket.or...i/Configuration and take a look at the various filebrowser/fileupload settings. those will need to be configured with the URL to the file browser/uploader.

there is various browsers/uploaders that can be used, a good and free one is KCFinder. You will find all the instructions on how to install and integrate KCFinder with CKEditor at following URL: http://kcfinder.sunhater.com